213334451 has 16 divisors (see below), whose sum is σ = 245477760. Its totient is φ = 183358080.

The previous prime is 213334441. The next prime is 213334477. The reversal of 213334451 is 154433312.

It is a cyclic number.

It is not a de Polignac number, because 213334451 - 2¹⁴ = 213318067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213334451.

It is not an unprimeable number, because it can be changed into a prime (213334441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163835 + ... + 165131.

It is an arithmetic number, because the mean of its divisors is an integer number (15342360).

Almost surely, 2^213334451 is an apocalyptic number.

213334451 is a deficient number, since it is larger than the sum of its proper divisors (32143309).

213334451 is a wasteful number, since it uses less digits than its factorization.

213334451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114.

The product of its digits is 4320, while the sum is 26.

The square root of 213334451 is about 14605.9731274571. The cubic root of 213334451 is about 597.5216763551.

Adding to 213334451 its reverse (154433312), we get a palindrome (367767763).

The spelling of 213334451 in words is "two hundred thirteen million, three hundred thirty-four thousand, four hundred fifty-one".